[ObjC ARC] Converts ios/chrome/browser/voice:tts to ARC.Automatically generated ARCMigrate commit…

ios/chrome/browser/voice/text_to_speech_listener.mm

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ios/chrome/browser/voice/text_to_speech_listener.h"
 
 #include <memory>
 
 #include "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
 #include "ios/web/public/navigation_manager.h"
 #include "ios/web/public/web_state/web_state.h"
 #include "ios/web/public/web_state/web_state_observer.h"
 #import "ios/chrome/browser/voice/text_to_speech_parser.h"
 #import "ios/chrome/browser/voice/voice_search_url_rewriter.h"
 #include "url/gurl.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 #pragma mark - TextToSpeechListener Private Interface
 
 class TextToSpeechWebStateObserver;
 
 @interface TextToSpeechListener ()
 
 // The TextToSpeechListenerDelegate passed on initialization.
-@property(nonatomic, readonly) id<TextToSpeechListenerDelegate> delegate;
+@property(weak, nonatomic, readonly) id<TextToSpeechListenerDelegate> delegate;
 
 @end
 
 #pragma mark - TextToSpeechWebStateObserver
 
 class TextToSpeechWebStateObserver : public web::WebStateObserver {
  public:
   TextToSpeechWebStateObserver(web::WebState* web_state,
                                TextToSpeechListener* listener);
   ~TextToSpeechWebStateObserver() override;
@@ skipping 37 matching lines @@
 }
 
 void TextToSpeechWebStateObserver::WebStateDestroyed() {
   [listener_.delegate textToSpeechListenerWebStateWasDestroyed:listener_];
 }
 
 #pragma mark - TextToSpeechListener
 
 @implementation TextToSpeechListener {
   // Backing object for property of the same name.
   base::WeakNSProtocol<id<TextToSpeechListenerDelegate>> _delegate;

[noyau (Ping after 24h), 2016/11/21 14:15:03]

Why don't you remove all that code? Everything related to the delegate can
simply use the weak property.

[stkhapugin, 2016/11/22 14:13:26]

Done.

   // The TextToSpeechWebStateObserver that listens for Text-To-Speech data.
   std::unique_ptr<TextToSpeechWebStateObserver> _webStateObserver;
 }
 
 - (instancetype)initWithWebState:(web::WebState*)webState
                         delegate:(id<TextToSpeechListenerDelegate>)delegate {
   if ((self = [super init])) {
     DCHECK(webState);
     DCHECK(delegate);
     _webStateObserver.reset(new TextToSpeechWebStateObserver(webState, self));
     _delegate.reset(delegate);
   }
   return self;
 }
 
 #pragma mark Accessors
 
 - (web::WebState*)webState {
   return _webStateObserver->web_state();
 }
 
 - (id<TextToSpeechListenerDelegate>)delegate {
   return _delegate.get();
 }
 
 @end